(19)

(11)

EP 0 741 857 A1

(12)

(43) Date of publication: 13.11.1996 Bulletin 1996/46 (21) Application number: 95908631.0 (22) Date of filing: 23.01.1995

(51) International Patent Classification (IPC):  G01B 11/ 00( . ) G01B 11/ 275( . ) G01S 7/ 48( . ) G01S 17/ 89( . ) G01B 11/ 03( . ) G01S 17/ 42( . ) G01S 17/ 66( . ) (86) International application number: PCT/US1995/000889 (87) International publication number: WO 1995/020140 (27.07.1995 Gazette 1995/32)

(84) Designated Contracting States: DE GB (30) Priority: 25.01.1994 US 19940186310 (71) Applicant: MTS SYSTEMS CORPORATION Eden Prairie, MN 55344-2290 (US)	(72) Inventors: HARVEY, Dennis, N. Victoria, MN 55386 (US) JENNIGES, Randal, L. Bloomington, MN 55438 (US) (74) Representative: Cross, Rupert Edward Blount, et al  BOULT WADE TENNANT 27 Furnival Street London EC4A 1PQ London EC4A 1PQ (GB)